小编Tob*_*ndt的帖子

是否可以在联合中共享两个数组,如下所示:

struct
    {
        union
        {
            float m_V[Height * Length];
            float m_M[Height] [Length];
        } m_U;
    };

这两个阵列共享相同的内存大小还是其中一个更长？

GL_TEXTURE0(插槽0上的纹理)之后的每个纹理都是黑色.

片段着色器(通过更改权重来检查不同纹理的示例代码):

#version 330

uniform sampler2D g_ColorTex;
uniform sampler2D g_DepthTex;
uniform sampler2D g_DofNearBlurTex;
uniform sampler2D g_DofDownBlurTex;

in vec4 g_VertexPosition;
in vec2 g_ScreenCoords;

layout (location = 0) out vec4  FragColor;

void main() 
{
    // Changing weights to check textures
    FragColor  = 1.00001f * vec4(texture(g_ColorTex      , g_ScreenCoords).rgb, 1.0f);
    FragColor += 0.00001f * vec4(texture(g_DepthTex      , g_ScreenCoords).rgb, 1.0f);
    FragColor += 0.00001f * vec4(texture(g_DofNearBlurTex, g_ScreenCoords).rgb, 1.0f);
    FragColor += 0.00001f * vec4(texture(g_DofDownBlurTex, g_ScreenCoords).rgb, 1.0f);
}

我上传这样的纹理(摘录!):

::glUseProgram(ShaderHandle);

unsigned int TextureIndex;


TextureIndex = ::glGetUniformLocation(ShaderHandle, "g_ColorTex");

::glUniform1i(TextureIndex, 0); …

我已经包含了框架和导入头文件.但是由于缺少AddressBookUI.h文件,xCode会抛出错误.

#import "PersonViewController.h"

#import <AddressBook/AddressBook.h>
#import <AddressBook/AddressBookUI.h>

@interface PersonViewController () <UITextFieldDelegate, UIActionSheetDelegate>
{
}

有什么建议？